A new use for 5200/4200

mandlmaunder

mandlmaunder

Well-Known Member
Joined
11 Jul 2007
Messages
1,581
Location
The Virgin Islands
Visit site
Just repaired our Carib 10ft inflatable dink using 4200 fast cure as a below the water line patch.

Tried the usual repair methods and was never totally happy with the results but this seems to be working very well after 3 weeks back in the water.

Method- dry out the offending inflatable, ruff up the area of aggravation, wipe with acetone, tape off area to be covered, apply a generous coating of 52/4200 fast cure and smooth out and allow to sit for at least 48 hours.

This worked for me.

Mark
 
It's a 3M product, it comes in a tube. It's a polyurethene adhesive/sealant, white in colour. In my experience it sticks with a tenacity that would make it the glue of choice for sticking spaceships together. It stays flexible after it's cured. Many boat builders in the USA use it for the hull to deck joint.
Recommended use is: "Permanent bonding, above and below waterline. Extremely strong and flexible".
 
tri39 said:
Sounds great, why isn't it on your website!?
Click to expand...

The stuff is a wonder product as far as I'm concerned, the only draw back is that for every tube used I usually go through a roll of paper towel trying to catch the stuff as a little drop spreads along way.

Contact 3M in your area to get hold of your nearest stockist !.

On big holes in a friends dink we are going to 5200 then place a reinforcing patch into the 5200 then another coating layer of 5200 and see how that holds. If successful I will stop trying to use hyperlone glue as the results are seldom what they should be.

4200 is a slightly less strong and removable version of 5200 which is designed not to come away EVER.

Used 4200 on a through hull chain plate leak recently with total success first time.

I don't have any connection with 3M but am a convert for the many new uses I am discovering for their water proof product.

Mark
 
Repair

I do not know the 3M stuff, is it so much better than any other polyurethane ?

Having tan sails and the mainsail becoming 30 year old, the yarn was at the end of its life due to chafe and Mediterranean sun. Until recently tan sails were unknown in Greece- Turkey so I had to repair the sails myself. Resewing the seams is a huge job and I had the suspect that making all those little holes with a stitcher did no good to the strength of the sail. So I cut 6 centimetre wide bands out of a torn mainsail and glued these on both sides over the old seams using brown Sikaflex and later brown polyurethane for car repair ( 2 € / Tube )
Managed to do six more years with the old sails. The slight colour difference of the seambands looks even high tech.
Last year, I had to buy 4 new sails, the sun had also destroyed the cloth.
 
The 3m 52/4200 is for use above and below the waterline, as a through hull fitting seal, don't know if that makes it unique but I like it and it also means one less tube of something rolling around the lockers.

But at 2euro a tube I'd give the sika some locker space if I could get it that cheap here.

Mark
 
Polyurethane

Some 15 year ago I followed courses given by Sikaflex for the yacht building industry in the Netherlands. There are many different kinds of polyuerthane, each job has a specific kind as best.
For instance, sealing yacht windows is a difficult thing to do. Polyurethane is not the right stuff for that job. ( secret of the craftsman );)
However, for the simple job any brand will do. Last winter Sikaflex was very expensive in Turkey, not so the Sika for the building industry.
In each town one finds the " Sanaiye " the grouped small shops like car repair, carpenters, etc.. In the paint shops there one finds real cheap polyuerethane used to repair cars. Bodywork is being glued nowadays instead of welded. Any brand will do for flexible glueing, but for through hull or under water, only the best is good enough.
 
You must log in or register to reply here.

Share this page

Top